2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
13 The SuperH is a RISC processor targeted for use in embedded systems
14 and consumer electronics; it was also used in the Sega Dreamcast
15 gaming console. The SuperH port has a home page at
16 <http://www.linux-sh.org/>.
18 config RWSEM_GENERIC_SPINLOCK
22 config RWSEM_XCHGADD_ALGORITHM
29 config GENERIC_FIND_NEXT_BIT
33 config GENERIC_HWEIGHT
37 config GENERIC_HARDIRQS
41 config GENERIC_IRQ_PROBE
45 config GENERIC_CALIBRATE_DELAY
55 config GENERIC_CLOCKEVENTS
58 config SYS_SUPPORTS_PM
61 config SYS_SUPPORTS_APM_EMULATION
63 select SYS_SUPPORTS_PM
65 config SYS_SUPPORTS_SMP
68 config SYS_SUPPORTS_NUMA
71 config SYS_SUPPORTS_PCI
74 config ARCH_MAY_HAVE_PC_FDC
77 config STACKTRACE_SUPPORT
81 config LOCKDEP_SUPPORT
85 config ARCH_HAS_ILOG2_U32
89 config ARCH_HAS_ILOG2_U64
93 config ARCH_NO_VIRT_TO_BUS
100 source "arch/sh/mm/Kconfig"
102 menu "Processor features"
105 prompt "Endianess selection"
106 default CPU_LITTLE_ENDIAN
108 Some SuperH machines can be configured for either little or big
109 endian byte order. These modes require different kernels.
111 config CPU_LITTLE_ENDIAN
114 config CPU_BIG_ENDIAN
124 Selecting this option will enable support for SH processors that
125 have FPU units (ie, SH77xx).
127 This option must be set in order to enable the FPU.
130 bool "FPU emulation support"
131 depends on !SH_FPU && EXPERIMENTAL
134 Selecting this option will enable support for software FPU emulation.
135 Most SH-3 users will want to say Y here, whereas most SH-4 users will
140 depends on CPU_HAS_DSP
143 Selecting this option will enable support for SH processors that
144 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
146 This option must be set in order to enable the DSP.
153 Selecting this option will allow the Linux kernel to use SH3 on-chip
158 config SH_STORE_QUEUES
159 bool "Support for Store Queues"
162 Selecting this option will enable an in-kernel API for manipulating
163 the store queues integrated in the SH-4 processors.
165 config SPECULATIVE_EXECUTION
166 bool "Speculative subroutine return"
167 depends on CPU_SUBTYPE_SH7780 && EXPERIMENTAL
169 This enables support for a speculative instruction fetch for
170 subroutine return. There are various pitfalls associated with
171 this, as outlined in the SH7780 hardware manual.
175 config CPU_HAS_INTEVT
178 config CPU_HAS_MASKREG_IRQ
181 config CPU_HAS_INTC_IRQ
184 config CPU_HAS_INTC2_IRQ
187 config CPU_HAS_IPR_IRQ
192 depends on CPU_SH3 || CPU_SH4
195 This will enable the use of SR.RB register bank usage. Processors
196 that are lacking this bit must have another method in place for
197 accomplishing what is taken care of by the banked registers.
199 See <file:Documentation/sh/register-banks.txt> for further
200 information on SR.RB and register banking in the kernel in general.
212 config SOLUTION_ENGINE
215 config SH_SOLUTION_ENGINE
216 bool "SolutionEngine"
217 select SOLUTION_ENGINE
218 select CPU_HAS_IPR_IRQ
219 depends on CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750
221 Select SolutionEngine if configuring for a Hitachi SH7709
222 or SH7750 evaluation board.
224 config SH_7206_SOLUTION_ENGINE
225 bool "SolutionEngine7206"
226 select SOLUTION_ENGINE
227 depends on CPU_SUBTYPE_SH7206
229 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
232 config SH_7619_SOLUTION_ENGINE
233 bool "SolutionEngine7619"
234 select SOLUTION_ENGINE
235 depends on CPU_SUBTYPE_SH7619
237 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
240 config SH_7722_SOLUTION_ENGINE
241 bool "SolutionEngine7722"
242 select SOLUTION_ENGINE
243 depends on CPU_SUBTYPE_SH7722
245 Select 7722 SolutionEngine if configuring for a Hitachi SH772
248 config SH_7751_SOLUTION_ENGINE
249 bool "SolutionEngine7751"
250 select SOLUTION_ENGINE
251 select CPU_HAS_IPR_IRQ
252 depends on CPU_SUBTYPE_SH7751
254 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
257 config SH_7780_SOLUTION_ENGINE
258 bool "SolutionEngine7780"
259 select SOLUTION_ENGINE
260 select SYS_SUPPORTS_PCI
261 select CPU_HAS_INTC2_IRQ
262 depends on CPU_SUBTYPE_SH7780
264 Select 7780 SolutionEngine if configuring for a Renesas SH7780
267 config SH_7300_SOLUTION_ENGINE
268 bool "SolutionEngine7300"
269 select SOLUTION_ENGINE
270 depends on CPU_SUBTYPE_SH7300
272 Select 7300 SolutionEngine if configuring for a Hitachi
273 SH7300(SH-Mobile V) evaluation board.
275 config SH_7343_SOLUTION_ENGINE
276 bool "SolutionEngine7343"
277 select SOLUTION_ENGINE
278 depends on CPU_SUBTYPE_SH7343
280 Select 7343 SolutionEngine if configuring for a Hitachi
281 SH7343 (SH-Mobile 3AS) evaluation board.
283 config SH_7751_SYSTEMH
285 depends on CPU_SUBTYPE_SH7751R
287 Select SystemH if you are configuring for a Renesas SystemH
288 7751R evaluation board.
292 select SYS_SUPPORTS_APM_EMULATION
293 select HD6446X_SERIES
294 depends on CPU_SUBTYPE_SH7709
296 Select HP6XX if configuring for a HP jornada HP6xx.
297 More information (hardware only) at
298 <http://www.hp.com/jornada/>.
302 select SYS_SUPPORTS_PCI
303 depends on CPU_SUBTYPE_SH7091
305 Select Dreamcast if configuring for a SEGA Dreamcast.
307 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
308 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
311 bool "Interface MPC1211"
312 depends on CPU_SUBTYPE_SH7751 && BROKEN
314 CTP/PCI-SH02 is a CPU module computer that is produced
315 by Interface Corporation.
316 More information at <http://www.interface.co.jp>
319 bool "Interface CTP/PCI-SH03"
320 depends on CPU_SUBTYPE_SH7751 && BROKEN
321 select CPU_HAS_IPR_IRQ
322 select SYS_SUPPORTS_PCI
324 CTP/PCI-SH03 is a CPU module computer that is produced
325 by Interface Corporation.
326 More information at <http://www.interface.co.jp>
328 config SH_SECUREEDGE5410
329 bool "SecureEdge5410"
330 depends on CPU_SUBTYPE_SH7751R
331 select CPU_HAS_IPR_IRQ
332 select SYS_SUPPORTS_PCI
334 Select SecureEdge5410 if configuring for a SnapGear SH board.
335 This includes both the OEM SecureEdge products as well as the
338 config SH_HS7751RVOIP
340 depends on CPU_SUBTYPE_SH7751R
342 Select HS7751RVOIP if configuring for a Renesas Technology
346 bool "SH7710-VOIP-GW"
347 depends on CPU_SUBTYPE_SH7710
349 Select this option to build a kernel for the SH7710 based
354 depends on CPU_SUBTYPE_SH7751R
355 select SYS_SUPPORTS_PCI
357 Select RTS7751R2D if configuring for a Renesas Technology
358 Sales SH-Graphics board.
362 depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
363 select SYS_SUPPORTS_PCI
367 depends on CPU_SUBTYPE_SH7705
369 config SH_SH4202_MICRODEV
370 bool "SH4-202 MicroDev"
371 depends on CPU_SUBTYPE_SH4_202
373 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
378 depends on CPU_SUBTYPE_SH7751R
379 select SYS_SUPPORTS_PCI
381 I-O DATA DEVICE, INC. "LANDISK Series" support.
385 depends on CPU_SUBTYPE_SH7751R
386 select CPU_HAS_IPR_IRQ
387 select SYS_SUPPORTS_PCI
389 Select Titan if you are configuring for a Nimble Microsystems
394 depends on CPU_SUBTYPE_SH7706
395 select CPU_HAS_IPR_IRQ
397 Select SHMIN if configuring for the SHMIN board.
401 depends on CPU_SUBTYPE_SH7751R
402 select SYS_SUPPORTS_PCI
404 Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2.
408 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
409 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
410 source "arch/sh/boards/renesas/r7780rp/Kconfig"
412 menu "Timer and clock configuration"
415 bool "TMU timer support"
416 depends on CPU_SH3 || CPU_SH4
418 select GENERIC_CLOCKEVENTS
421 This enables the use of the TMU as the system timer.
424 bool "CMT timer support"
428 This enables the use of the CMT as the system timer.
431 bool "MTU2 timer support"
435 This enables the use of the MTU2 as the system timer.
439 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
440 default "86" if CPU_SUBTYPE_SH7619
441 default "140" if CPU_SUBTYPE_SH7206
445 int "Peripheral clock frequency (in Hz)"
446 default "27000000" if CPU_SUBTYPE_SH7343
447 default "31250000" if CPU_SUBTYPE_SH7619
448 default "32000000" if CPU_SUBTYPE_SH7722
449 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
450 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
452 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
453 default "66000000" if CPU_SUBTYPE_SH4_202
456 This option is used to specify the peripheral clock frequency.
457 This is necessary for determining the reference clock value on
458 platforms lacking an RTC.
461 int "CPU Mode Pin Setting"
462 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
463 default 6 if CPU_SUBTYPE_SH7206
464 default 5 if CPU_SUBTYPE_SH7619
467 MD2 - MD0 pin setting.
469 source "kernel/time/Kconfig"
473 menu "CPU Frequency scaling"
475 source "drivers/cpufreq/Kconfig"
478 tristate "SuperH CPU Frequency driver"
480 select CPU_FREQ_TABLE
482 This adds the cpufreq driver for SuperH. At present, only
483 the SH-4 is supported.
485 For details, take a look at <file:Documentation/cpu-freq>.
491 source "arch/sh/drivers/Kconfig"
497 depends on SH_MPC1211
500 menu "Kernel features"
502 source kernel/Kconfig.hz
505 bool "kexec system call (EXPERIMENTAL)"
506 depends on EXPERIMENTAL
508 kexec is a system call that implements the ability to shutdown your
509 current kernel, and to start another kernel. It is like a reboot
510 but it is independent of the system firmware. And like a reboot
511 you can start any kernel with it, not just Linux.
513 The name comes from the similarity to the exec system call.
515 It is an ongoing process to be certain the hardware in a machine
516 is properly shutdown, so do not be surprised if this code does not
517 initially work for you. It may help to enable device hotplugging
518 support. As of this writing the exact hardware interface is
519 strongly in flux, so no good recommendation can be made.
522 bool "kernel crash dumps (EXPERIMENTAL)"
523 depends on EXPERIMENTAL
525 Generate crash dump after being started by kexec.
526 This should be normally only set in special crash dump kernels
527 which are loaded in the main kernel with kexec-tools into
528 a specially reserved region and then later executed after
529 a crash by kdump/kexec. The crash dump kernel must be compiled
530 to a memory address not used by the main kernel using
533 For more details see Documentation/kdump/kdump.txt
536 bool "Symmetric multi-processing support"
537 depends on SYS_SUPPORTS_SMP
539 This enables support for systems with more than one CPU. If you have
540 a system with only one CPU, like most personal computers, say N. If
541 you have a system with more than one CPU, say Y.
543 If you say N here, the kernel will run on single and multiprocessor
544 machines, but will use only one CPU of a multiprocessor machine. If
545 you say Y here, the kernel will run on many, but not all,
546 singleprocessor machines. On a singleprocessor machine, the kernel
547 will run faster if you say N here.
549 People using multiprocessor machines who say Y here should also say
550 Y to "Enhanced Real Time Clock Support", below.
552 See also the <file:Documentation/smp.txt>,
553 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
554 at <http://www.tldp.org/docs.html#howto>.
556 If you don't know what to do here, say N.
559 int "Maximum number of CPUs (2-32)"
562 default "4" if CPU_SHX3
565 This allows you to specify the maximum number of CPUs which this
566 kernel will support. The maximum supported value is 32 and the
567 minimum value which makes sense is 2.
569 This is purely to save memory - each supported CPU adds
570 approximately eight kilobytes to the kernel image.
572 source "kernel/Kconfig.preempt"
577 depends on NEED_MULTIPLE_NODES
583 config ZERO_PAGE_OFFSET
584 hex "Zero page offset"
585 default "0x00004000" if SH_MPC1211 || SH_SH03
586 default "0x00010000" if PAGE_SIZE_64KB
587 default "0x00002000" if PAGE_SIZE_8KB
590 This sets the default offset of zero page.
592 config BOOT_LINK_OFFSET
593 hex "Link address offset for booting"
596 This option allows you to set the link address offset of the zImage.
597 This can be useful if you are on a board which has a small amount of
601 bool "Wakeup UBC on startup"
604 Selecting this option will wakeup the User Break Controller (UBC) on
605 startup. Although the UBC is left in an awake state when the processor
606 comes up, some boot loaders misbehave by putting the UBC to sleep in a
607 power saving state, which causes issues with things like ptrace().
612 bool "Default bootloader kernel arguments"
615 string "Initial kernel command string"
616 depends on CMDLINE_BOOL
617 default "console=ttySC1,115200"
623 # Even on SuperH devices which don't have an ISA bus,
624 # this variable helps the PCMCIA modules handle
625 # IRQ requesting properly -- Greg Banks.
627 # Though we're generally not interested in it when
628 # we're not using PCMCIA, so we make it dependent on
629 # PCMCIA outright. -- PFM.
632 depends on PCMCIA && HD6446X_SERIES
634 Find out whether you have ISA slots on your motherboard. ISA is the
635 name of a bus system, i.e. the way the CPU talks to the other stuff
636 inside your box. Other bus systems are PCI, EISA, MicroChannel
637 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
638 newer boards don't support it. If you have ISA, say Y, otherwise N.
643 The Extended Industry Standard Architecture (EISA) bus was
644 developed as an open alternative to the IBM MicroChannel bus.
646 The EISA bus provided some of the features of the IBM MicroChannel
647 bus while maintaining backward compatibility with cards made for
648 the older ISA bus. The EISA bus saw limited use between 1988 and
649 1995 when it was made obsolete by the PCI bus.
651 Say Y here if you are building a kernel for an EISA-based machine.
658 MicroChannel Architecture is found in some IBM PS/2 machines and
659 laptops. It is a bus system similar to PCI or ISA. See
660 <file:Documentation/mca.txt> (and especially the web page given
661 there) before attempting to build an MCA bus kernel.
667 tristate "SuperHyway Bus support"
668 depends on CPU_SUBTYPE_SH4_202
671 bool "Compact Flash Enabler support"
672 depends on SOLUTION_ENGINE || SH_SH03
674 Compact Flash is a small, removable mass storage device introduced
675 in 1994 originally as a PCMCIA device. If you say `Y' here, you
676 compile in support for Compact Flash devices directly connected to
677 a SuperH processor. A Compact Flash FAQ is available at
678 <http://www.compactflash.org/faqs/faq.htm>.
680 If your board has "Directly Connected" CompactFlash at area 5 or 6,
681 you may want to enable this option. Then, you can use CF as
682 primary IDE drive (only tested for SanDisk).
684 If in doubt, select 'N'.
687 prompt "Compact Flash Connection Area"
688 depends on CF_ENABLER
694 If your board has "Directly Connected" CompactFlash, You should
695 select the area where your CF is connected to.
697 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
698 - "Area6" if it is connected to Area 6 (0x18000000)
700 "Area6" will work for most boards.
709 depends on CF_ENABLER
710 default "0xb8000000" if CF_AREA6
711 default "0xb4000000" if CF_AREA5
713 source "arch/sh/drivers/pci/Kconfig"
715 source "drivers/pci/Kconfig"
717 source "drivers/pcmcia/Kconfig"
719 source "drivers/pci/hotplug/Kconfig"
723 menu "Executable file formats"
725 source "fs/Kconfig.binfmt"
729 menu "Power management options (EXPERIMENTAL)"
730 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
732 source kernel/power/Kconfig
738 source "drivers/Kconfig"
742 source "arch/sh/oprofile/Kconfig"
744 source "arch/sh/Kconfig.debug"
746 source "security/Kconfig"
748 source "crypto/Kconfig"